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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Lebanon

Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.

 

43

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.21 ppb42ND - 3.82 ppb
20130.240 ppb229ND - 1.32 ppb
2014N/A00N/A
2015N/A00N/A
20161.37 ppb139ND - 3.50 ppb
20172.88 ppb442.25 ppb - 3.38 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.

ppb = parts per billion

All test results

Date Lab ID Result
2012-01-26AB63905ND
2012-04-25AB69351ND
2012-07-24AB783481.02 ppb
2012-10-18AB850743.82 ppb
2013-02-19AB921631.02 ppb
2013-02-19AB92164ND
2013-02-19AB92165ND
2013-02-19AB92166ND
2013-02-19AB92167ND
2013-02-19AB921681.000 ppb
2013-04-23AB963370.400 ppb
2013-04-23AB96347ND
2013-04-23AB963450.310 ppb
2013-04-23AB96343ND
2013-04-23AB963410.350 ppb
2013-04-23AB96339ND
2013-04-23AB963350.340 ppb
2013-04-23AB96333ND
2013-10-22AC13637ND
2013-10-22AC13635ND
2013-10-22AC13633ND
2013-10-22AC13629ND
2013-10-22AC136270.300 ppb
2013-10-22AC136251.32 ppb
2013-10-22AC136230.230 ppb
2013-10-22AC13631ND
2016-02-29AC665661.77 ppb
2016-02-29AC665631.64 ppb
2016-02-29AC665681.79 ppb
2016-02-29AC665693.50 ppb
2016-02-29AC665641.72 ppb
2016-02-29AC665651.95 ppb
2016-02-29AC66567ND
2016-03-25AC690331.86 ppb
2016-03-25AC69046ND
2016-04-04AC702921.37 ppb
2016-04-04AC702932.22 ppb
2016-08-02AC80038ND
2016-10-12AC85441ND
2017-01-30AC893143.38 ppb
2017-04-17AC946523.03 ppb
2017-07-18AD017182.85 ppb
2017-10-24AD080552.25 ppb